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我无法在 OS X Mavericks 上从源代码中编译 libpng16。在我升级到 Mavericks 之前，它编译得很好。

我正在使用CMake源外编译，即：

>cd lpng166
>mkdir build && cd build
>cmake .. && make

哪个运行没有错误

Cmake生成一个文件pnglibconf.h，然后将其包含include_directories(${CMAKE_CURRENT_BINARY_DIR})在 libpngs CMakeLists.txt 文件中。

这显然不起作用，我得到下面的错误输出。

[  3%] Building C object CMakeFiles/png16.dir/png.o
In file included from /Users/xxx/Downloads/lpng166/png.c:14:
In file included from /Users/xxx/Downloads/lpng166/pngpriv.h:237:
/Users/xxx/Downloads/lpng166/png.h:917:5: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
    png_unknown_chunkp));
    ^~~~~~~~~~~~~~~~~~
/Users/xxx/Downloads/lpng166/pngconf.h:341:70: note: expanded from macro 'PNG_CALLBACK'
#  define PNG_CALLBACK(type, name, args) type (PNGCBAPI name) PNGARG(args)
                                                                     ^
/Users/xxx/Downloads/lpng166/pngconf.h:116:27: note: expanded from macro 'PNGARG'
#  define PNGARG(arglist) arglist
                          ^
In file included from /Users/xxx/Downloads/lpng166/png.c:14:
In file included from /Users/xxx/Downloads/lpng166/pngpriv.h:761:
/Users/xxx/Downloads/lpng166/pngstruct.h:456:4: error: unknown type name 'png_unknown_chunk'
   png_unknown_chunk unknown_chunk;
   ^
In file included from /Users/xxx/Downloads/lpng166/png.c:14:
/Users/xxx/Downloads/lpng166/pngpriv.h:993:11: error: unknown type name 'png_xy'
    const png_xy *xy), PNG_EMPTY);
          ^
/Users/xxx/Downloads/lpng166/pngpriv.h:206:39: note: expanded from macro 'PNG_INTERNAL_FUNCTION'
      extern PNG_FUNCTION(type, name, args, PNG_EMPTY attributes)
                                      ^
/Users/xxx/Downloads/lpng166/pngconf.h:309:75: note: expanded from macro 'PNG_FUNCTION'
#  define PNG_FUNCTION(type, name, args, attributes) attributes type name args
                                                                          ^
/Users/xxx/Downloads/lpng166/png.c:3698:11: warning: implicit declaration of function 'png_gamma_significant' is invalid in C99 [-Wimplicit-function-declaration]
      if (png_gamma_significant(gamma_val))
          ^
/Users/xxx/Downloads/lpng166/png.c:3905:64: error: no member named 'colorspace' in 'struct png_struct_def'
         png_ptr->screen_gamma > 0 ?  png_reciprocal2(png_ptr->colorspace.gamma,
                                                      ~~~~~~~  ^
/Users/xxx/Downloads/lpng166/png.c:3914:13: warning: implicit declaration of function 'png_reciprocal' is invalid in C99 [-Wimplicit-function-declaration]
            png_reciprocal(png_ptr->colorspace.gamma));
            ^
/Users/xxx/Downloads/lpng166/png.c:3914:37: error: no member named 'colorspace' in 'struct png_struct_def'
            png_reciprocal(png_ptr->colorspace.gamma));
                           ~~~~~~~  ^
/Users/xxx/Downloads/lpng166/png.c:3918:22: error: no member named 'colorspace' in 'struct png_struct_def'
            png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */);
            ~~~~~~~  ^
/Users/xxx/Downloads/lpng166/png.c:3987:60: error: no member named 'colorspace' in 'struct png_struct_def'
         png_ptr->screen_gamma > 0 ? png_product2(png_ptr->colorspace.gamma,
                                                  ~~~~~~~  ^
/Users/xxx/Downloads/lpng166/png.c:3993:63: error: no member named 'colorspace' in 'struct png_struct_def'
         png_ptr->screen_gamma > 0 ? png_reciprocal2(png_ptr->colorspace.gamma,
                                                     ~~~~~~~  ^
/Users/xxx/Downloads/lpng166/png.c:4003:37: error: no member named 'colorspace' in 'struct png_struct_def'
            png_reciprocal(png_ptr->colorspace.gamma));
                           ~~~~~~~  ^
/Users/xxx/Downloads/lpng166/png.c:4011:22: error: no member named 'colorspace' in 'struct png_struct_def'
            png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */);
            ~~~~~~~  ^
3 warnings and 9 errors generated.
make[2]: *** [CMakeFiles/png16.dir/png.o] Error 1
make[1]: *** [CMakeFiles/png16.dir/all] Error 2
make: *** [all] Error 2

如果我手动将生成的文件复制pnglibconf.h到源目录中，则构建工作得非常好。这让我想到了include_directories(${CMAKE_CURRENT_BINARY_DIR})不能按预期工作的假设。

我已尝试使用此答案建议的方式列出包含目录。输出显示该目录实际上位于源的包含目录中。这真的很令人困惑。

>cmake ..
-- dir='/opt/local/include'
-- dir='/Users/xxx/Downloads/lpng166/build'
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/xxx/Downloads/lpng166/build

我使用的是 CMake 版本 2.8.12，同样的问题是 2.8.10。

编辑：因为我发现了主要问题而改变了话题。

4

0 回答 0